Crossword clues for When most dreams occur 3 lettersAnswerClueREM___ sleep (when most dreams occur)REMWhen most dreams occurREMWith 37-Down, period during which most dreaming occursREMPhenomenon that occurs during dreamsSLEEPPHASE*Most dreaming occurs in the last oneREMSLEEPState in which most dreams occurNIGHTWhen most dreams occurINREMWhen dreams occur, for shortOPTAResults that only occur in your wildest dreams